Full Stack Developer – React, Node, Cosmos DB, Test Automation

Location: [Remote / Hybrid / On-site City, Country]

Employment Type: Full-Time

Experience Level: 3-8 years

Industry: Technology / SaaS / Data Platforms

We are seeking a skilled and proactive Full Stack Developer to join our engineering team. You will be responsible for building robust, scalable web applications using React.js and Node.js, with a strong focus on Cosmos DB and Elasticsearch for data management. A key part of your role will be developing and maintaining automated test cases and validation frameworks to ensure application stability and data integrity.

• Design, develop, and maintain front-end components using React.js (hooks, context, component reusability).
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• Build and maintain scalable REST APIs using Node.js and Express.
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• Integrate and query Cosmos DB and Elasticsearch for real-time and historical data access.
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• Implement unit, integration, and end-to-end tests using Jest, Cypress, and Supertest.
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• Develop and enforce automated validation rules for data correctness and integrity.
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• Work closely with DevOps to integrate tests into CI/CD pipelines.
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• Collaborate with UI/UX designers, product managers, and backend engineers.
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• Own feature delivery end-to-end, from requirements to deployment and monitoring.

• 4+ years of professional experience in full-stack development.
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• Strong knowledge of React.js, JavaScript/TypeScript, and Node.js.
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• Experience with Cosmos DB, including partitioning, indexing, and SDK usage.
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• Proficiency in Elasticsearch, including mapping, queries, and aggregations.
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• Hands-on experience with automated testing frameworks:
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• Frontend: React Testing Library, Cypress
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• Backend: Jest, Mocha, Supertest
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• Experience building and maintaining data validation frameworks (JSON schema, business rules).
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• Git-based workflow and experience with Agile development.

• Knowledge of Azure services (App Services, Functions, Cosmos DB configuration).
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• Experience with containerized deployments using Docker.
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• Familiarity with CI/CD pipelines (GitHub Actions, Azure DevOps, etc.).
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• Exposure to performance testing and test coverage reporting tools.

• Work on a modern tech stack solving real-world data challenges.
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• Collaborative, high-performance team environment.
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• Flexible work arrangements and strong engineering culture.
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• Ownership of impactful features and visibility across teams.